Purchase date is not validated

I just bought a new M1 air at a authorized seller store in Viet Nam a few day ago, but the problem is warranty coverage wasn't show up when the Mac was actived ( Purchase date is not validated)

I already asked for explanation from the store, I just answered I need to wait for a few days while Apple update my info of my Mac.

However, When I looked at service categories in about my Mac, I saw " Limited warranty expires in 28 Nov, 2022.

This is the first time I bought a new MacBook, so I don't know what to do next

Is seller store lying to me?